[landtank]

I did some knock testing when I was evaluating my MAF housing. I have the auto enginuity software so it could be recorded. What I would do is place the tranny in 2nd start mode and take off at the bottom of a hill full throttle. I never saw the timing retard under those conditions running 87 octane gas.

I have always been under the impression that our ECUs don't advance the spark past a preset value and only retard the spark if needed. But I have not tried to prove that either way.